{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["protein", "cell type", "RNA", "cell line"], "input": "The activity of DNA relaxing enzymes (e.g. topoisomerases I and II ) in nuclear extracts was measured using a PBR 322-relaxation-assay ."}
{"protein": ["DNA relaxing enzymes"], "cell type": [], "RNA": [], "cell line": []}